Stove.



L. MILLER@` sTovB. APPLIOATIOXIILED NOV. l2, 1901.

899,122. 'l Patented septb 22,`1 9o8.\

WfnvEssEs: [NVE/WOR Afn: wann uns :u: inguine.. l, e

furnaces and particularly contemplates 'the v'ff onirico sT Applicationfiled ITovembei 12, 190". Serial No.' 401,845. n

zen of the United States, residing at Elwood,

in the county of Madison and State of Indiana, have invented certain newand useful Improvements in Stoves, of which the following is aspecification.

My invention relates to heating stoves or provision of certain novelmechanisms operating the grate, ash-pit and drafts to be used incombination with such a stove as described and claimed in my applicationfiled April 2, 1906, and serially numbered 309,536.

My invention further and specifically resides in the following featuresof construction, arrangement and operation as will be hereinafterdescribed with reference to the aecompanyin g drawings, in which likenumerals are used to designate like parts throughout the. severalfigures, and in which- Figure 1 is a vertical sectional view of myimproved stove, F ig. 2 is a horizontal sectional view on the line 22 ofFig. 1, Fig. 3 is a similar view on the line 3 3 of Fig. 1, Fig. 4 is afragmentary detail view of paits to be hereinafter speci'licallydescribed. Fig. 5 is an elevation of the ash-pit door operating device,and Fig. 6 is a detail sectional view on the line 6 6 of Fig. l.

In the practical embodiment of my invention I provide a stove comprisinga base plate 1 forming the bottom of the ash-pit 2 mounted on suitablelegs 3 and provided with a central opening 4 and an annular upstandingflange encircling the same. The ash-'pit 2 is provided with aV door 6hinged with the front thereof to swing in a vertical pla-ne, and hasarranged therein a circular scraper comprising a hub 7 encircling theflange 5 and a circumferential rib Sconnectedto said 'hub by webs 9. Thescraper is arranged upon the base plate 1 within the 4ash-pit, said baseplate being provided with an opening 10 therethrough rovidedwith aswinging door 11 operated liy a handle 1,2 pivotally mounted at 13 in abracket 14 extending below the opening 4 to move away from said opening1() to provide for 'the dumping of ashes therethrough by the scraper.The circumferential ring 8 of the scraper is provided with a lower rackface 15, adapted to be engaged by a pinion 16 mount ed on a rotatableshaft 17. The shaft 17 is rotatively mounted in a bearing 18 below theopening 10 to swing 1n a vertical plane Specific-ation of LettersPatent.

ArnsPiirnN-T onirica.

Lewis MILLER, or ELwooD, INDIANA.

s'TovE.

Patented sepa-e2, 190s.

through said 4opening' to engage its pinion 16 with the rack asdescribed, the forward end of said shaft being arranged through a frame19 formed in a circular depending flange 2() of the base plate 1. Theframe 19 has 'a pivot member 21 secured thereto having a recess thereinarranged to engage beneath the forward portion of shaft 17 when the same is swung upwardly to hold the saine in position while said shaft isbeing rotated by a suitable handle upon its squared end 22,

to rotate the scraper and clean the base.

plate by means of the webs 9 and the opening 10, it being understoodthatthe door l1 has been previously moved to the position shown in Fig.2 by the handle 12.

Arranged vertically above vthe, central opening 4 is an air pipe 23leading within an enlarged air shell 24 having a rino 25 arranged at itsupper end and irovided with openingsl 26 therethrough, through which theair after its passage upwardly through the stove is discharged into therooin. EX- tending from the u )per edge of the ash-pit 2 is an outwardlyflaring Alire-pot 27 within which is arranged a circular grate 28 havinga rack 29 upon its lower face arranged to be rotated or engaged by thepinion 30 mounted on a shaft 31 extending through the wall of theash-pit 2 and provided with an outer squared portion P2 for thereception of a handle or shaker. fire-pot is grooved for the receptionof an annular shell 33 forming a casing for the products of combustionto circulate about the air shell 24 andpipe 23, and connected at itsupper end to the ring 25 provided with closed pipes 34 for conductingsaid products .i door 39 formed through the shell 33 provides means forsupplying fuel to the fire-por' 27', said shell 33 being furtherprovided with an outstanding heat deflecting ring 43 at its connectionwith the lire-pot 27. The deflecting ring 40 is provided with a shortshaft 41 journaled in brackets 42 The upper edge of the' formed thereonand provided with an operl aeter described, of the ash-.pitiirovidedwithan opening therethrough, ash ing door nor-- ating screw 43 by whichsaid shaft may be rotated, a spring 44 being arranged between the end'of the shaft outside one of the brackets 42 to bear thereagainst andpre-V with a rotating valve 47 associated therein' comprising adepending tubular port-ion 4S 'having a. circular outstanding ilange [19at its upper end and a plurality of blocks 52 carried by said valve andspaced apart to be moved opposite openings 46 to close the same or to bemoved to the position shown in Fig. 6 to open the same. The tubular-fpor'ion 48 is preferably of a substantially smaller diameter than thepipe 23 in order to aliow air to pass between the saine. and said-pipeand into the tiropot 27 through the openings 46 to mix with the smokeand gases and materially aid in the combustion thereof. The valve 47 maybe rotated by a vertical stein 50 extending centrally upwardly throughthe air shell 24 and provided with an operating arm 51, extending fromits upper end V through one of the openings 26 of the ring 25. The stein5() may thus be rotated by the oscillatory movement of said arm 5l andis rigidly connected to the valve 47 b v a U-shaped frame 54.

hile VI have herein shown and described my improvement-s in connectionand working with a stove, it will be understood that they are just asreadily applicable to a furnace and its component parts, with onlynominal changes falling within the terms of the following claims.

Haring thus fully described my invention, I claim:

1. T he combination in a stove of the charnially closing said opening,an aiinuiar scraper arranged within said ash-.pit provided with a lowerrack face, and a rotatable ver' tica-ily movable shaft mounted belowsaid opening and carrying a pinion adapted for engagement with said rackwhen said door Iis opened to rotate said scraper, substanl rotatableshaft mounted below said opening and provided with a pinion adapted foren# `gagement with said rack to rot-ate the same when said door has beenopened, and means for` holding said pinion in engagement with said rack,substantially as described.

In a stove of the character described, the combination of an outer shellforming a combustion chamber, an inner air chamber mounted within saidcombustion chamber having communication through said outer shell to theatmosphere adjacent its upper end, an air supply pipe communicating withsaid air chamber from below said combustion chamber, said air pipehaving openings formed therethrough and communicating with saidcombustionchamber, and a valve comprising a tubular portion of reduceddiameter within said pipe, having a. circular ,flange closing said pipeabove said openings therein, and provided with spaced blockscorresponding to said openings, and means for rotating said valve toregister said blocks land the spaces between the same with saidopenings, substantially as described.

In testimony whereof l aflix my signature in presence of two witnesses.

LEWIS MILLER. Witnesses:

Z. D. HUrrnaN, J. H. FENDER.

